Speed indicator



June 26, 1923.

1,460,218 w. H. F. SMITH S FEED I NDI CATOR Filed April 15. 1918 2 Shets-Sheet 1 June 26, 1923.

1,460,218 w. H. F. SMITH SPEED INDICATOR med April 15 1918 2 Sheets-Sheet 2 17129671257". I z zzimzms mm, by $11 Patented June 26, 1923.

UNITED STATES PATENT oFrI-cE.

WILLIAM H. F. SMITH, F MILWAUKEE, WISCONSIN, ASSIGNOB, BY MESNE ASSIGN- MENTS, TO INTERNATIONAL HARVESTER COMPANY, A CORPORATION OF NEW JERSEY.

SPEED INDICATOR.

Application filed April 15, 1918. Serial No. 228,743.

To all whom it may concern:

Be it known that I, WILLIAM H. F. SMITH, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of IVisconsin, have invented certain new and useful Improvements in Speed Indicators, of which the following is a full, clear, and exact specification.

This invention relates to speed indicators, particularly audible speed indicators,

An object of the invention is to provide a speed indicator which will indicate when a certain speed of a rotating member has been attained.

Another object is to provide a reliable indicator that will not readily get out of repair These and other objects are attained by my invention which consists ofa speed indicator comprising a pivoted sound producin indicator member.

lieferring now to the drawings in which like numerals represent like parts throughout,- I

Figure 1 is an elevation of my indicator applied to a rotatable crank;

Fig. 2 a view at right angles to Fig. 1; Figs. 3 and 4.- are similar to Figs. 1 and 2 respectively, except that the indicator is here applied to a longer crank; and

Figs. 5 to 8 are similar to Figs. 1 to l respectively, but are modifications designed to be applied to cranks which have not the lugs integral therewith for carrying the oscillator.

My device as shown in Figs. 1 and 2 consists of a crank 10 adapted to be applied to a shaft or other rotatable member 11., the boss 11 being provided with a bore to re ceive the shaft. At the other end of the crank is a handle 12 which is shown broken away and which is secured to the crank by a threaded stud or bolt 13 passing through a hole in the end of the crank and held in place by a nut 14.

The crank preferably has two lugs 15 be tween which is pivoted an oscillator 16. The swing of this oscillator is limited by the crank 10 on the inner throw and by the bolt 13 on the outer throw as shown by the dotted lines in Figs, 1 and 2. In Figs. 3 and 1 a lug 17 is formed on the crank to provide an abutment against which the oscillator will strike on the outer throw.

Figs. 5 and 6 show a modification.in which the lugs 18, to which the oscillator 16 is pivoted, are carried by a plate 19 which is retained by the nut 14.

Figs. 7 and 8 show a further modification for use on a longer crank in which the plate 19 carries a raised portion 20 against which the oscillator strikes.

In operation the crank is turned in a vertical plane about the center of the shaft 11 as an axis. As the crank is turned slowly the oscillator falls by gravity on each half revolution, striking the crank 10 on the up stroke of the crank and the abutment as 13, 17 or 20 on the down stroke.

WVhen. however, the speed becomes great enough the oscillator due to the centrifugal action of the revolving crank, will not make a complete oscillation on each half revolution but will fail to strike on the inner side which is on the upstroke due to the fact that centrifugal action has partly overcome the action of gravity.

As the speed of the crank is increased the swing of the oscillator becomes shorter and shorter until it ceases altogether and the oscillator is held against the outer abutment.

This device is particularly adapted to be used on cream separators and enables the operator to know from the sound emitted when he is keeping the speed of the separator above a predetermined point.

I realize that the device is capable of other modifications; changes therefore in the construction and arrangement may be made without departing from the spirit and scope of the appended claims:

1. In a speed indicator, the combination of a crank rotatable in a vertical plane, an oscillator pivoted to the crank to swing in a plane at right angles to the plane ofrotation of the crank and adapted to strike the crank in either of its extreme positions of oscillation and give an audible signal.

2. In a speed indicator, the combination i of a rotatable crank, a lug on the crank, an

oscillator pivoted to the lug and adapted to strike the crankin each extreme position of its oscillation,

3. In a speed indicator, the combination of a rotatable crank, an abutment on the crank, a lug on the crank adjacent the abutment, an oscillator pivoted to the lug and adapted to strike the abutment in one extreme position of its oscillation and give an 10 audible signal. v

In testimony whereof I aflix my signature.

WILLIAM. H. F. SMITH. 

